CN117124084A - Pre-spot welding cutting machine for power battery lugs - Google Patents
Pre-spot welding cutting machine for power battery lugs Download PDFInfo
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- CN117124084A CN117124084A CN202310995999.7A CN202310995999A CN117124084A CN 117124084 A CN117124084 A CN 117124084A CN 202310995999 A CN202310995999 A CN 202310995999A CN 117124084 A CN117124084 A CN 117124084A
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- 238000003466 welding Methods 0.000 title claims abstract description 203
- 238000005520 cutting process Methods 0.000 title claims abstract description 145
- 230000007246 mechanism Effects 0.000 claims abstract description 216
- 238000003825 pressing Methods 0.000 claims abstract description 61
- 238000007599 discharging Methods 0.000 claims abstract description 35
- 238000005452 bending Methods 0.000 claims abstract description 33
- 230000000007 visual effect Effects 0.000 claims abstract description 27
- 238000001514 detection method Methods 0.000 claims abstract description 18
- 238000007493 shaping process Methods 0.000 claims abstract description 11
- 238000012423 maintenance Methods 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims description 21
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 14
- 238000007906 compression Methods 0.000 claims description 14
- 230000006835 compression Effects 0.000 claims description 14
- 229910052802 copper Inorganic materials 0.000 claims description 14
- 239000010949 copper Substances 0.000 claims description 14
- 230000008569 process Effects 0.000 claims description 14
- 239000002699 waste material Substances 0.000 claims description 13
- 239000000428 dust Substances 0.000 claims description 7
- 238000009472 formulation Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 claims 1
- 210000004027 cell Anatomy 0.000 description 42
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000005056 compaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229910052755 nonmetal Inorganic materials 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000007730 finishing process Methods 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000011179 visual inspection Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P23/00—Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass
- B23P23/04—Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass for both machining and other metal-working operations
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/25—Movable or adjustable work or tool supports
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
- B23Q3/06—Work-clamping means
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The invention relates to a pre-spot welding cutting machine for pole lugs of a power battery, which comprises a three-axis manipulator welding system, a battery core feeding and discharging mechanism, a machine seat, a pre-bending pre-spot welding cutting mechanism, a pressing plate mechanism and a visual detection system, wherein the battery core feeding and discharging mechanism is used for conveying a battery core stacking unit to an operation position, the visual detection system is used for addressing a pole piece position after the operation is finished, the pre-bending pre-spot welding cutting mechanism is used for shaping and cutting a pole piece, and the three-axis manipulator welding system is used for welding the shaped and cut pole piece. Compared with the prior art, the invention has the advantages that: the cell stacking unit subjected to the pre-spot welding and cutting is convenient to pass through the busbar slot hole, and meanwhile, after being bent, the electrode lugs are sealed neatly, so that the subsequent electrode lug welding center welding seam is convenient to guide; the flexibility is high; high safety and convenient maintenance.
Description
Technical Field
The invention relates to a tab cutting machine, in particular to a pre-spot welding cutting machine for a power battery tab.
Background
Currently, in the field of soft-pack power batteries and solid-state batteries, in order to meet different use conditions (power density, size, capacity dissipation, etc.), a plurality of formulation forms (such as 2P/3P/4P, etc.) often exist. Under the background of technical iteration, cost reduction and synergy, the product structure is improved, and a plurality of 2P/3P/4P pole pieces often need to pass through the same busbar, and then corresponding cutting, bending, rolling and welding are carried out. In the cutting process of the plurality of pole pieces, the influence of different cell thicknesses, the positioning analysis of the plurality of cells, the warping of the pole pieces after cutting, the influence of the service life of the cutting knife and the flexible switching analysis of the stacking formula are considered at the same time.
There are two types of conventional practice, one of which: the battery cells are automatically stacked into modules according to a preset formula, and the stacked battery cells are placed in a pressure maintaining tray. The tray flows to the manual station, and after the lugs are combed manually by using the comb, the lugs are enabled to be in a converging state and can pass through the busbar slotted holes. The method is characterized by high flexibility and compatibility with different formulas. The disadvantages are: the manual operation intensity is big, and is higher to the stacking lug hardness more than 3P, is difficult to pass the busbar slotted hole. Meanwhile, a plurality of manual work stations are required to be configured on the production line.
And two,: the battery cells are stacked into small units (such as 2P/3P/4P) according to a preset formula, the tabs are pre-folded and cut, and then the battery cells pass through the bus bars to be folded, rolled and welded. The method is characterized in that the small stacking units (such as 2P/3P/4P and the like) are easy to position, high in flexibility and high in automation degree. The disadvantages are: after the small stacking units (such as 2P/3P/4P and the like) are pre-folded and cut, the pole pieces rebound to different degrees, so that after passing through the busbar slots, the pole pieces formed on the busbar are misplaced after the pole lugs are bent, and a welding center line is easy to find out when the post-station pole lugs are welded.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide the pre-spot welding cutting machine for the pole lugs of the power battery, and the battery core stacking units (2P/3P/4P and the like) subjected to the pre-spot welding cutting conveniently penetrate through the busbar slot holes, and meanwhile, after being bent, the pole lugs are sealed in order, so that the welding center welding seam of the follow-up pole lugs is conveniently guided.
The aim of the invention can be achieved by the following technical scheme:
a pre-spot welding cutting machine for power battery tabs comprises a three-axis manipulator welding system, a battery core feeding and discharging mechanism, a machine base, a pre-bending pre-spot welding cutting mechanism, a pressing plate mechanism and a visual detection system;
the machine base comprises a cutter seat, a sliding table and the like;
the battery cell feeding and discharging mechanism is arranged on the machine base through a guide rail, can move forwards and backwards on the machine base in an X mode, is used for clamping and positioning the battery cell stacking unit positioned in the previous working procedure for the second time, sequentially sends the battery cell stacking unit to the operation positions of the pre-bending pre-spot welding cutting mechanism and the three-axis manipulator welding system, and is used for sending the battery cell stacking unit to a discharging position after the operation is finished;
the electric core feeding and discharging mechanism comprises a servo sliding table, an electric core positioning mechanism, a guide rail and a drag chain, wherein the servo sliding table is arranged on the guide rail and can slide back and forth on the guide rail, one side of the drag chain is arranged on the servo sliding table, the other side of the drag chain is arranged on the guide rail, the drag chain can stretch out and draw back in the moving process of the servo sliding table, normal power supply and air supply of a cable are ensured, the electric core positioning mechanism is arranged on the servo sliding table and is fixedly connected with the servo sliding table through bolts, the electric core positioning mechanism positions and clamps the electric core, the position of the sliding table cannot slide in the moving process of the sliding table, the servo sliding table can flow to different positions, and a robot or other mechanisms can conveniently grasp or discharge electric core units;
the pressing plate mechanism is arranged above the machine base through a guide bearing and an air cylinder and can move up and down in the Z direction, the pressing plate mechanism is used for pressing the pre-bending pre-spot welding cutting mechanism and the battery core stacking unit at the operation position of the three-axis manipulator welding system, the pressing plate mechanism comprises a guide mechanism, a telescopic mechanism and a pole piece pressing mechanism, the battery core position can not slide in the bending, cutting and welding processes, the non-operation position is safely protected, the pole piece pressing mechanism plays a role in preventing the pole piece from warping before the multi-layer pole piece performs the pre-spot welding function, the pole piece pressing mechanism has a pre-pressing function, the pole piece is leaning against the supporting mechanism, other mechanisms are enabled to press down more effectively, the pressing plate upright mechanism is arranged on the machine base, one end of the guide mechanism is fixed on the pressing plate upright mechanism, the other end of the guide mechanism is fixed on the pole piece pressing mechanism, the fixed end of the telescopic mechanism is fixed above the pressing plate upright mechanism, and the movable end of the telescopic mechanism is fixed on the pole piece pressing mechanism through the cooperation of the telescopic mechanism and the guide mechanism, so that the pole piece pressing mechanism moves in the Z direction;
the visual detection system is arranged above the machine base, performs visual addressing detection, is used for performing visual addressing guidance on the welding and cutting positions of the lug before cutting and welding, controlling the shaping cutting position of the pre-bending pre-spot welding cutting mechanism and the pre-spot welding position of the three-axis manipulator welding system, judging the size state after cutting, feeding back the processing results of cutting and pre-spot welding, and timely eliminating unqualified products, and comprises a cylinder, a guide rail, a connecting piece, a camera and a light source, wherein the light source is arranged below the connecting piece, the camera is arranged above the connecting piece, normal functional operation can be performed on the camera through the light source, the connecting piece is fixed on the machine base through a guide rail, the movable end of the cylinder is connected on the connecting piece, and the fixed end of the cylinder is connected on the machine base, so that the connecting piece drives the camera to move along the guide rail, and thus the camera exits from an operation area after photographing, and the functional operation of other mechanisms is facilitated;
the pre-bending pre-spot welding cutting mechanism is arranged on the machine base, can perform Y left-right reciprocating motion on the machine base and is used for shaping and cutting pole pieces, and comprises a servo feeding mechanism, a pre-spot welding cutting press-fitting mechanism and a waste collection device, wherein the servo feeding mechanism is directly connected with the machine base through a guide rail, the servo feeding mechanism can perform Y-direction reciprocating servo motion, the pre-spot welding cutting press-fitting mechanism is arranged above the servo feeding mechanism and can perform Z-direction telescopic servo motion, the servo feeding mechanism is used for transverse feeding of the pre-bending pre-spot welding cutting mechanism, the feeding stroke is adjustable, pre-spot welding cutting operation of different formula stacking units (2 p/3p/4p and the like) is facilitated at different positions, and the waste collection device is arranged on one side of the machine base and is used for intensively storing and periodically and manually discharging waste;
the pre-spot welding cutting press-fitting mechanism comprises a dust absorption pipeline, a lower cutter die, an upper cutter die, a welding press head telescopic mechanism, an upper cutter die telescopic mechanism, a guide rail and a pole piece pre-folding roller, wherein the dust absorption pipeline is arranged at the bottom of the pre-spot welding cutting press-fitting mechanism and used for absorbing and collecting cut waste materials, the lower cutter die is arranged at one side of the bottom of the pre-spot welding cutting press-fitting mechanism and used for supporting pole pieces to be cut, the upper cutter die is arranged on the upper cutter die telescopic mechanism, the upper cutter die telescopic mechanism is driven by an air cylinder and used for controlling the upper cutter die to cut the pole pieces, the upper cutter die telescopic mechanism is arranged above the pre-spot welding cutting press-fitting mechanism through the guide rail and can drive the upper cutter die to perform Z-direction servo motion, the welding press head telescopic mechanism is independently arranged on the pre-spot welding cutting press-fitting mechanism, the pole piece can be independently pressed down and clamped, the lower knife film adopts longitudinal servo feeding for confirming the leveling positions of different stacking units, the height of the lower knife film is adjustable, the pole piece pre-folding roller is used for ensuring that the pole piece is bent in radian during pre-folding, the connecting blocks of the upper knife film and the lower knife film are all made of non-metal materials, the welding pressure head telescopic mechanism comprises a telescopic cylinder, a compression spring and a welding copper nozzle pressure head, the welding copper nozzle pressure head is arranged on the telescopic cylinder unit through a linear guide bearing and the compression spring, the compression spring can be in telescopic displacement for ensuring that the pressure head always contacts with the pole piece, the telescopic cylinder is connected on the pre-spot welding cutting press-fitting mechanism through a guide rail, the welding copper nozzle pressure head and the pole piece can be contacted or disconnected through Z-direction movement, the compression spring can ensure that the welding copper nozzle pressing head can be pressed down to press the pole piece under different formulation working conditions and different thickness tolerances;
the three-axis manipulator welding system is fixed on the ground, the installation height of the three-axis manipulator welding system is higher than that of other mechanisms, the moving operation in the XYZ direction can be performed through the control of a servo shaft, and the three-axis manipulator welding system is used for welding pole pieces which are shaped and cut by the pre-bending pre-spot welding cutting mechanism, so that welding of different lug positions and stacking formula heights is realized, and the welding seam positions and the welding seam sizes are flexibly compatible according to different welding formulas;
the triaxial manipulator welding system comprises a servo triaxial manipulator, a drag chain, a welding vibrating mirror and a ranging sensor, wherein the drag chain is arranged on different shafts of the servo triaxial manipulator and can stretch and retract along with the movement of the servo triaxial manipulator; the welding vibrating mirror is arranged on the Z axis at the tail end of the servo triaxial manipulator, and performs welding operation along with the movement of the servo triaxial manipulator to different positions; the distance measuring sensor is arranged on the Z axis at the tail end of the servo triaxial manipulator, and the distance measuring sensor is preferably a laser distance measuring sensor along with the movement of the servo triaxial to different positions for welding operation; the triaxial manipulator welding system realizes welding of different lug positions and stacking formula heights.
Further, according to the cell feeding and discharging mechanism, the number of the cell feeding and discharging mechanisms or the number of the cell feeding and discharging mechanisms and the number of the processing units can be increased according to different production beats.
Further, the electric core positioning mechanism comprises a centering clamping mechanism and an electric core large-surface sucking disc suction mechanism, the large-surface sucking disc mechanism is arranged on the electric core positioning table, the electric core positioning table is used for supporting and stabilizing other components, the large-surface sucking disc mechanism sucks the electric core in the large-surface Z direction and prevents sliding in the movement process, and the centering clamping mechanism is arranged on the electric core positioning table and positions and clamps the side face XY of the electric core end in the direction.
Furthermore, the upper cutting die and the lower cutting die can be moved from the rear side of the sliding table, so that the cutting die maintenance is convenient.
Further, the upper cutting die and the lower cutting die are hollow cutting knives and are used for preventing the cut tabs from touching the cutting knives.
The cell stacking units (2P/3P/4P and the like) cut through the pre-spot welding are convenient to penetrate through the busbar slot holes, and meanwhile, after being bent, the electrode lugs are tidy in edge sealing, so that the subsequent electrode lug welding center welding seam guiding is convenient.
Working principle:
s1: and placing the cell stacking unit (such as 2P/3P/4P and the like) positioned in the previous working procedure on a cell feeding and discharging mechanism, and performing secondary clamping and positioning on the cell by the cell feeding and discharging mechanism.
S2: the electric core feeding and discharging mechanism sends the electric core stacking unit (2P/3P/4P and the like) to the pre-spot welding cutting station, and the electric core stacking unit is controlled to slide to the pre-spot welding cutting position through the servo module, and the pressing plate mechanism compresses the large surface of the stacking unit and protects the large surface of the stacking unit.
S3: the vision camera in the vision detection system performs position addressing on the stacked battery cell lugs, the offset is fed back to the servo sliding table, the servo sliding table is fed to corresponding operation positions, the pre-bending pre-spot welding cutting mechanism performs pre-shaping, welding pressure head compaction and pole piece cutting on the battery cell lugs in sequence, and then the three-axis manipulator welding system moves to perform pole piece ranging and pre-spot welding.
S4: after the pre-spot welding cutting operation is finished, the clamping head and the pressing plate are opened, and the battery core feeding and discharging mechanism enables the battery core stacking unit (such as 2P/3P/4P and the like) to slide to a discharging position. The cylinder drives the camera to take a picture and detect, and the processing result of the battery cell stacking unit (such as 2P/3P/4P and the like) is fed back.
The electrode plates on two sides of the battery cell are provided with the independent servo feeding pre-spot welding cutting machine, so that the asynchronous cutting and pre-spot welding actions on two sides of the battery cell can be realized.
According to the invention, the cut tab fragments of the cutting mechanism send the tab to the waste box through the slideway.
Compared with the prior art, the invention has the following advantages:
(1) The cell stacking unit (2P/3P/4P and the like) subjected to the pre-spot welding and cutting conveniently penetrates through the busbar slot hole, and meanwhile, after being bent, the electrode lug is sealed neatly, so that the subsequent electrode lug welding center weld joint guidance is facilitated. The technical effect of this scheme is realized through the cooperation of each part: the electric core feeding and discharging mechanism is used for feeding electric core stacking units (2P/3P/4P and the like) into the pre-spot welding cutting station; the pressing plate mechanism is used for pressing the battery core stacking unit and preventing the electrode plate from warping; the visual detection system is used for addressing the position of the pole piece and controlling the cutting and pre-spot welding positions; the pre-bending pre-spot welding cutting mechanism is used for shaping and cutting off redundant pole pieces; the triaxial manipulator welding system is used for welding the pole piece after shaping and cutting. Therefore, the pole pieces of the cell stacking units at the subsequent stations are in the form of whole bundles, rather than divergent, and are easier to pass through the busbar assembly for subsequent processing.
(2) The flexibility is high: because the component system of the equipment is modularized, the cutting type can be cut into cells with different types and lengths by changing different pressure heads or cutting dies.
(3) Stable and reliable: in the invention, a motor is used as a power source, and the pre-spot welding is cut into the same position, so that the problem of non-uniform reference is solved.
(4) The safety is high: because the connecting blocks of the upper and lower cutting dies are all made of nonmetallic materials, the positive and negative electrodes of the battery cell can not be communicated into a loop all the time in the finishing process of the cutting action through the hollow structure of the cutting tool, and the short circuit condition caused by the fact that the battery cell is not installed in place in the prior art is avoided.
(5) The overhaul and maintenance are convenient: because the welding pressure head adopts the compression spring to float and connect, ensure to realize the pressure head contact product. Meanwhile, the position of the upper bracket of the integer type can be adjusted, and the debugging is convenient. The cutter can be disassembled and removed from the rear space, so that maintenance operation is convenient when abrasion repair and spot inspection overhaul are performed.
Drawings
Fig. 1 is a schematic structural view of a system of a pre-spot welding and cutting mechanism for tabs of a power battery.
Fig. 2 is a schematic structural diagram of a three-axis robot welding system.
Fig. 3 is a schematic structural diagram of the battery core feeding and discharging mechanism.
Fig. 4 is a schematic structural view of a pre-bending and pre-spot welding cutting mechanism.
Fig. 5 is a schematic structural view of the platen mechanism.
Fig. 6 is a schematic structural diagram of a visual inspection system.
Fig. 7 is a schematic view showing the structure of the support and press-fitting mechanism of the pre-bending and pre-spot welding cutting mechanism in a refined manner.
Reference numerals: 100. a three-axis robot welding system; 200. the electric core feeding and discharging mechanism; 300. a base; 400. a pre-bending and pre-spot welding cutting mechanism; 500. a platen mechanism; 600. a visual detection system; 1. a column support; 2. a servo triaxial manipulator; 3. a laser ranging sensor; 4. welding a vibrating mirror; 121. a drag chain I; 122. a first guide rail; 123. a cell positioning mechanism; 124. a servo slipway; 141. a machine table; 142. a waste collection device; 143. a valve island and a connecting plate; 144. a drag chain II; 145. a servo feed slipway; 146. a tab lower support mechanism; 147. a pre-spot welding cutting press-fitting mechanism; 151. a pressing plate upright post bracket; 152. a pressing plate; 153. a pole piece pressing mechanism; 154. a guide mechanism; 155. a telescoping mechanism; 161. visual steel structure bracket; 162. drag chain III; 163. a visual connection bracket; 164. a vision camera and a light source; 165. a telescopic cylinder; 166. a second guide rail; 41. a dust collection pipeline; 42. pole piece pre-folding rollers; 43. a lower cutting die; 44. an upper cutting die; 45. welding a copper nozzle pressing head; 46. a compression spring; 47. welding a pressure head telescopic mechanism; 48. an upper cutting die telescopic mechanism; 49 guide rail three.
Detailed Description
The invention will now be described in detail with reference to the drawings and specific examples. Features such as a part model, a material name, a connection structure, a control method, an algorithm and the like which are not explicitly described in the technical scheme are all regarded as common technical features disclosed in the prior art.
Example 1
The embodiment provides a pre-spot welding cutting machine for power battery tabs, as shown in fig. 1, including: the three-axis mechanical arm welding system 100, the battery cell feeding and discharging mechanism 200, the machine base 300, the pre-bending pre-spot welding cutting mechanism 400, the pressing plate mechanism 500 and the visual detection system 600.
The triaxial manipulator welding system 100, as shown in fig. 2, comprises a stand column bracket 1, a servo triaxial manipulator 2, a laser ranging sensor 3, a welding galvanometer 4 and a drag chain, wherein the drag chain is arranged on different axes of the servo triaxial manipulator 2 and can stretch and retract along with the movement of the servo triaxial manipulator 2; the welding vibrating mirror 4 is arranged on the Z axis at the tail end of the servo three-axis manipulator 2, and performs welding operation along with the movement of the servo three-axis manipulator 2 to different positions; the laser ranging sensor 3 is arranged on the Z axis at the tail end of the servo triaxial manipulator, and performs welding operation along with the movement of the servo triaxial to different positions; the triaxial manipulator welding system realizes welding of different lug positions and stacking formula heights. . The servo triaxial manipulator 2 can adjust different strokes, facilitates welding of welding seams on different welding positions and welding heights, and the laser ranging sensor 3 is used for feeding back the defocusing amount required by welding. The triaxial manipulator welding system 100 is fixed on the ground, the installation height of the triaxial manipulator welding system 100 is higher than that of other mechanisms, the movement operation in the XYZ direction can be performed through the control of a servo shaft, and the triaxial manipulator welding system is used for welding pole pieces subjected to shaping and cutting by the pre-bending pre-spot welding cutting mechanism 400, so that welding of different lug positions and stacking formula heights is realized, and the welding seam positions and the welding seam sizes are flexibly compatible according to different welding formulas.
The electric core feeding and discharging mechanism 200 comprises a first drag chain 121, a first guide rail 122, an electric core positioning mechanism 123 and a servo sliding table 124, wherein the servo sliding table 124 is arranged on the guide rail and can slide back and forth on the first guide rail 122, one side of the first drag chain 121 is arranged on the servo sliding table 124, the other side of the first drag chain 121 is arranged on the first guide rail 122, the first drag chain 121 can stretch and retract in the moving process of the servo sliding table 124, normal power supply and air supply of a cable are ensured, and the electric core positioning mechanism 123 is arranged on the servo sliding table 124 and is fixedly connected with the servo sliding table 124 through bolts.
The electric core positioning mechanism 123 is used for positioning and clamping two groups of electric cores, so that the position of the sliding table cannot slide in the moving process, the servo sliding table 124 can be transferred to different positions, and a robot or other mechanisms can conveniently grab or discharge electric core units. The electric core feeding and discharging mechanism 200 is installed on the machine base 300 through the guide rail 122, can move forward and backward on the machine base 300 in an X mode, is used for carrying out secondary clamping and positioning on the electric core stacking unit positioned in the previous working procedure, and sequentially sends the electric core stacking unit to the operation positions of the pre-bending pre-spot welding cutting mechanism 400 and the triaxial manipulator welding system 100, and is used for sending the electric core stacking unit to the discharging position after the operation is finished.
The pre-bending pre-spot welding cutting mechanism 400 is arranged on the machine base 300, can perform Y left-right reciprocating motion on the machine base 300 and is used for shaping and cutting pole pieces, the pre-bending pre-spot welding cutting mechanism 400 comprises a servo feeding sliding table 145, a pre-spot welding cutting press-fitting mechanism 147 and a waste collection device 142, wherein the servo feeding sliding table 145 is directly connected with the machine base 300 through a guide rail, the servo feeding sliding table 145 can perform Y-direction reciprocating servo motion, the pre-spot welding cutting press-fitting mechanism 147 is arranged above the servo feeding sliding table 145 and can perform Z-direction telescopic servo motion, the servo feeding sliding table 145 is used for transverse feeding of the pre-bending pre-spot welding cutting mechanism 400, the feeding stroke is adjustable, pre-spot welding cutting operation is conveniently performed on different formula stacking units (2 p/3p/4p and the like) at different positions, and the waste collection device 142 is arranged on one side of the machine base 300 and is used for collecting and periodically discharging waste scraps manually in a concentrated manner;
the pre-spot welding cutting press-fitting mechanism 147 comprises a dust collection pipeline 41, a lower cutter mold 44, an upper cutter mold 43, a welding press head telescopic mechanism 47, an upper cutter mold telescopic mechanism 48, a guide rail III 49 and a pole piece pre-folding roller 42, wherein the dust collection pipeline 41 is arranged at the bottom of the pre-spot welding cutting press-fitting mechanism 147 and used for absorbing and collecting the cut waste, the lower cutter mold 44 is arranged at one side of the bottom of the pre-spot welding cutting press-fitting mechanism 147 and used for supporting the pole piece to be cut, the upper cutter mold 43 is arranged on the upper cutter mold telescopic mechanism 48, the upper cutter mold telescopic mechanism 48 is driven by an air cylinder, the upper cutter mold telescopic mechanism 48 controls the upper cutter mold 44 to cut the pole piece, the upper cutter mold telescopic mechanism 48 is arranged above the pre-spot welding cutting press-fitting mechanism 147 through the guide rail III 49 and can drive the upper cutter mold 43 to carry out Z-direction servo movement, the welding press head telescopic mechanism 47 is independently arranged on the pre-spot welding cutting press-fitting mechanism 147, the pole piece can be independently pressed down and clamped, the lower knife film 44 adopts longitudinal servo feeding for confirming the leveling positions of different stacking units, the lower knife film 44 is adjustable in height, the pole piece pre-folding roller 42 is used for ensuring that the pole piece is bent in radian during pre-folding, the connecting blocks of the upper knife film 43 and the lower knife film 44 are all made of nonmetal materials, the welding press head telescopic mechanism 47 comprises a telescopic cylinder 165, a compression spring 46 and a welding copper nozzle press head 45, the welding copper nozzle press head 45 is arranged on the telescopic cylinder 165 unit through a linear guide bearing and the compression spring 46, the compression spring 46 can move in a telescopic way so as to ensure that the press head always contacts the pole piece, the telescopic cylinder 165 is connected on the pre-spot welding cutting press mechanism 147 through a guide rail III 49, the welding copper nozzle press head 45 and the pole piece can be contacted or disconnected through Z-direction movement, the compression spring 46 can ensure that the welding copper nozzle pressure head 45 can press the pole piece downwards under different formulation working conditions and different thickness tolerances;
the pressing plate mechanism 500, as shown in fig. 5, comprises a pressing plate column support 151, a pressing plate 152, a pole piece pressing mechanism 153, a guiding mechanism 154 and a telescoping mechanism 155, and is used for ensuring that the battery core position does not slide in the bending, cutting and welding processes, and simultaneously performing safety protection on the non-operation position, wherein the pole piece pressing mechanism 153 has the function of preventing the pole piece from warping before the multi-layer pole piece performs the pre-spot welding function, the pole piece pressing mechanism has the pre-pressing function, the pole piece is leaning against the supporting mechanism, other mechanisms are enabled to press down more effectively, the pressing plate column support 151 is arranged on the machine base 300, one end of the guiding mechanism 154 is fixed on the pressing plate column support 151, the other end of the guiding mechanism 154 is fixed on the pole piece pressing mechanism 153, the fixed end of the telescoping mechanism 155 is fixed above the pressing plate column support 151, and the movable end of the telescoping mechanism 155 is fixed on the pole piece pressing mechanism 153 through the cooperation of the telescoping mechanism 155 and the guiding mechanism 154, so that the pole piece pressing mechanism 153 moves in the Z direction.
The pressing plate mechanism 500 is installed above the machine base 300 through a guide bearing and a cylinder, can move up and down in the Z direction, and is used for pressing the cell stacking unit at the operation position of the pre-bending pre-spot welding cutting mechanism 400 and the triaxial manipulator welding system 100, and the pressing plate mechanism 500 has two layers of effects, namely, the pressing plate 152 is ensured to be in contact with a product, so that the cell position is prevented from sliding in the cutting or pole lug pressing process, and the cell surface is safely protected in the pole lug cutting or welding process.
The visual detection system 600, as shown in fig. 6, comprises a visual steel structure support 161, a drag chain III 162, a visual connection support 163, a visual camera and light source 164, a telescopic cylinder 165 and a guide rail II 166, wherein the camera can perform normal functional operation through the light source, the visual steel structure support 161 is fixed on the machine base 300 through the guide rail II 166, the movable end of the cylinder is connected to the visual steel structure support 161, the fixed end of the cylinder is connected to the machine base 300, and the movement of the cylinder enables the visual steel structure support 161 to drive the visual camera and the light source 164 to move along the guide rail II 166, so that the camera can exit from an operation area after photographing, and other mechanisms can perform functional operation conveniently;
the visual detection system 600 is arranged above the stand 300, and the visual detection system 600 has two layers of functions, namely, before cutting and welding, visual addressing guidance is carried out on the welding and cutting positions of the tabs, and after cutting, the cutting size of the battery core stacking unit (2P/3P/4P and the like) in the length direction is judged, and NG (unqualified products) is removed in time.
Working principle:
s1: and placing the cell stacking unit positioned in the previous process on a cell feeding and discharging mechanism 200, and performing secondary clamping and positioning on the cell by the cell feeding and discharging mechanism 200.
S2: the electric core feeding and discharging mechanism 200 sends the electric core stacking unit into the pre-spot welding cutting station, and the electric core stacking unit is controlled to slide to the pre-spot welding cutting position through the servo module, and the pressing plate mechanism 500 compresses and protects the large surface of the stacking unit.
S3: the vision detection system 600 performs position addressing on the stacked battery cell tabs, the offset is fed back to the servo sliding table 124, the servo sliding table 124 is fed to a corresponding operation position, the pre-bending pre-spot welding cutting mechanism 400 sequentially performs pre-shaping, welding press-compaction and pole piece cutting, and then the three-axis mechanical arm welding system 100 moves to perform pole piece ranging and pre-spot welding.
S4: after the pre-spot welding cutting operation is finished, the clamping head and the pressing plate are opened, and the battery cell feeding and discharging mechanism 200 enables the battery cell stacking unit to slide to a discharging position. The cylinder drives the camera to carry out photographing detection, and the processing result of the battery cell stacking unit is fed back.
All the components are matched, so that pole pieces of the battery cell stacking unit (2P/3P/4P and the like) can conveniently penetrate through the busbar slot holes, and the end faces of the pole lugs are flush after cutting through the process of bending and welding the pole lugs.
The previous description of the embodiments is provided to facilitate a person of ordinary skill in the art in order to make and use the present invention. It will be apparent to those skilled in the art that various modifications can be readily made to these embodiments and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above-described embodiments, and those skilled in the art, based on the present disclosure, should make improvements and modifications without departing from the scope of the present invention.
Claims (10)
1. The pre-spot welding cutting machine for the power battery tab is characterized by comprising a triaxial manipulator welding system, a battery core feeding and discharging mechanism, a machine base, a pre-bending pre-spot welding cutting mechanism, a pressing plate mechanism and a visual detection system;
the battery cell feeding and discharging mechanism is arranged on the machine base through a guide rail, can move forwards and backwards on the machine base in an X mode, is used for clamping and positioning the battery cell stacking unit positioned in the previous working procedure for the second time, sequentially sends the battery cell stacking unit to the operation positions of the pre-bending pre-spot welding cutting mechanism and the three-axis manipulator welding system, and is used for sending the battery cell stacking unit to a discharging position after the operation is finished;
the pressing plate mechanism is arranged above the machine base through a guide bearing and an air cylinder, can move up and down in the Z direction and is used for pressing the pre-bending pre-spot welding cutting mechanism and the cell stacking unit at the operation position of the three-axis manipulator welding system;
the visual detection system is arranged above the machine base, performs visual addressing detection, is used for performing visual addressing guidance on tab welding and cutting positions before cutting and welding, controls the shaping cutting position of the pre-bending pre-spot welding cutting mechanism and the pre-spot welding position of the three-axis manipulator welding system, and is also used for feeding back the processing results of cutting and pre-spot welding and timely eliminating unqualified products;
the pre-bending pre-spot welding cutting mechanism is arranged on the machine base, can reciprocate left and right on the machine base and is used for shaping and cutting the pole piece;
the three-axis manipulator welding system is fixed on the ground, the installation height of the three-axis manipulator welding system is higher than that of other mechanisms, and the three-axis manipulator welding system can be controlled by a servo shaft to carry out moving operation in XYZ directions and is used for welding the pole piece after being shaped and cut by the pre-bending pre-spot welding cutting mechanism.
2. The pre-spot welding cutter for power battery tabs according to claim 1, wherein the triaxial manipulator welding system comprises a servo triaxial manipulator, a drag chain, a welding vibrating mirror and a ranging sensor;
the drag chain is arranged on different shafts of the servo triaxial manipulator, and can stretch and retract along with the movement of the servo triaxial manipulator;
the welding vibrating mirror is arranged on the Z axis at the tail end of the servo triaxial manipulator, and performs welding operation along with the movement of the servo triaxial manipulator to different positions;
the distance measuring sensor is arranged on the Z axis at the tail end of the servo triaxial manipulator, and performs welding operation along with the movement of the servo triaxial to different positions;
the triaxial manipulator welding system realizes welding of different lug positions and stacking formula heights.
3. The pre-spot welding cutter for the tabs of the power battery according to claim 1, wherein the battery core feeding and discharging mechanism comprises a servo sliding table, a battery core positioning mechanism, a guide rail and a drag chain;
the servo sliding table is arranged on the guide rail and can slide back and forth on the guide rail;
one side of the drag chain is arranged on the servo sliding table, the other side of the drag chain is arranged on the guide rail, and the drag chain can stretch out and draw back in the moving process of the servo sliding table, so that normal power supply and air supply of the cable are ensured;
and the battery cell positioning mechanism is arranged on the servo sliding table and is fixedly connected with the servo sliding table through bolts.
4. The pre-spot welding cutter for power battery tabs according to claim 3, wherein the cell positioning mechanism comprises a central cell clamping mechanism, a cell positioning table and a cell large-surface sucking disc sucking mechanism;
the large-surface sucker mechanism is arranged on the battery cell positioning table and is used for sucking the large surface Z direction of the battery cell to prevent sliding in the movement process;
and the centering clamping mechanism is arranged on the battery cell positioning table and is used for positioning and clamping the side face X and Y of the battery cell end.
5. The pre-spot welding cutting machine for the power battery tab according to claim 1, wherein the pre-bending pre-spot welding cutting mechanism comprises a servo feeding mechanism, a pre-spot welding cutting press-fitting mechanism and a waste collecting device;
the servo feeding mechanism is directly connected with the machine base through a guide rail, and can perform reciprocating servo motion in the Y direction;
the pre-spot welding cutting press-fitting mechanism is arranged above the servo feeding mechanism and can perform Z-direction telescopic servo movement;
the waste collection device is arranged on one side of the machine base and is used for collecting and storing the scraps in a concentrated mode and manually discharging the scraps periodically.
6. The pre-spot welding cutting machine for the tab of the power battery according to claim 5, wherein the pre-spot welding cutting press-fitting mechanism comprises a dust collection pipeline, a lower cutting die, an upper cutting die, a welding press head telescopic mechanism, an upper cutting die telescopic mechanism, a guide rail and a pole piece pre-folding roller;
the dust collection pipeline is arranged at the bottom of the pre-spot welding cutting press-fitting mechanism and is used for absorbing and collecting the cut waste;
the lower cutting die is arranged at one side of the bottom of the pre-spot welding cutting press-fitting mechanism and used for supporting the tab pole piece to be cut;
the upper cutting die is arranged on the upper cutting die telescopic mechanism, and the upper cutting die telescopic mechanism controls the upper cutting die to cut the pole piece;
the upper cutting die telescopic mechanism is arranged above the pre-spot welding cutting press-fitting mechanism through a guide rail and can drive the upper cutting die to perform Z-direction servo movement;
the welding press head telescopic mechanism is independently arranged on the pre-spot welding cutting press-fitting mechanism and can independently press down and clamp the pole piece of the tab;
the lower knife film adopts longitudinal servo feeding for confirming leveling positions of different stacking units, and the height of the lower knife film is adjustable;
the pole piece pre-folding roller is used for ensuring that the pole piece is folded in radian during pre-folding;
the connecting blocks of the upper cutting die and the lower cutting die are all made of nonmetallic materials;
the welding pressure head telescopic mechanism comprises a telescopic cylinder, a compression spring and a welding copper nozzle pressure head;
the welding copper nozzle pressure head is arranged on the telescopic cylinder unit through a linear guide bearing and a compression spring, and the compression spring can move in a telescopic way so as to ensure that the pressure head always contacts with the pole piece of the electrode lug;
the telescopic cylinder is connected to the pre-spot welding cutting press-fitting mechanism through a guide rail, and the welding copper nozzle pressing head and the tab pole piece can be contacted or disconnected through Z-direction movement;
the compression spring can ensure that the welding copper nozzle pressing head can be pressed down to press the pole piece under different formulation working conditions and different thickness tolerances.
7. The pre-spot welding cutting machine for the tabs of the power battery according to claim 6, wherein the upper cutting die and the lower cutting die are hollow cutting knives and are used for preventing the already-cut tabs from touching the cutting knives, and the welding copper nozzle pressing head is integrated with a slotted hole and can laterally blow protective gas on the side face.
8. The machine of claim 6, wherein the upper and lower dies are movable from the rear of the table for die maintenance.
9. The pre-spot welding cutter for power battery tabs according to claim 1, wherein the pressing plate mechanism comprises a pressing plate upright post mechanism, a guiding mechanism, a telescopic mechanism and a pole piece pressing mechanism;
the pressing plate upright post mechanism is arranged on the base;
one end of the guide mechanism is fixed on the pressing plate upright post mechanism, and the other end of the guide mechanism is fixed on the pole piece pressing mechanism;
the fixed end of the telescopic mechanism is fixed above the pressing plate upright post mechanism, and the movable end of the telescopic mechanism is fixed on the pole piece pressing mechanism;
the pole piece pressing mechanism can move in the Z direction through the matching of the telescopic mechanism and the guide mechanism;
the visual detection system comprises an air cylinder, a guide rail, a connecting piece, a camera and a light source;
the light source is arranged below the connecting piece, the camera is arranged above the connecting piece, and the camera can perform normal functional operation through the light source;
the connecting piece is fixed on the frame through the guide rail, the movable end of the air cylinder is connected on the connecting piece, the fixed end of the air cylinder is connected on the frame, and the movement of the air cylinder enables the connecting piece to drive the camera to move along the guide rail, so that the camera can exit from the working area after photographing, and other mechanisms can conveniently perform functional operation.
10. The machine of claim 1, wherein the number of the cell feeding and discharging mechanisms is plural, and the cell feeding and discharging mechanisms process plural cell stacking units simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310995999.7A CN117124084A (en) | 2023-08-09 | 2023-08-09 | Pre-spot welding cutting machine for power battery lugs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310995999.7A CN117124084A (en) | 2023-08-09 | 2023-08-09 | Pre-spot welding cutting machine for power battery lugs |
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| Publication Number | Publication Date |
|---|---|
| CN117124084A true CN117124084A (en) | 2023-11-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310995999.7A Pending CN117124084A (en) | 2023-08-09 | 2023-08-09 | Pre-spot welding cutting machine for power battery lugs |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117428507A (en) * | 2023-12-21 | 2024-01-23 | 东莞市远疆陶瓷科技有限公司 | Electrode slice cutting and welding integrated device |
-
2023
- 2023-08-09 CN CN202310995999.7A patent/CN117124084A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117428507A (en) * | 2023-12-21 | 2024-01-23 | 东莞市远疆陶瓷科技有限公司 | Electrode slice cutting and welding integrated device |
| CN117428507B (en) * | 2023-12-21 | 2024-03-15 | 东莞市远疆陶瓷科技有限公司 | Electrode slice cutting and welding integrated device |
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